Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for reducing vibration during start-up of blast furnace gas residual pressure power generation device

A technology of residual pressure power generation and start-up process, which is applied to the start-up of engines, blast furnaces, and blast furnace details. The effect of work efficiency

Inactive Publication Date: 2014-10-29
SHANGHAI MEISHAN IRON & STEEL CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method can only be applied to wet units after wet ring sealing, washing and dust removal. The Bischoff system is used to control the top pressure of the blast furnace, and the gas temperature is lowered, and the power generation per ton of iron is also greatly reduced. It is not suitable for dry blast furnaces with high-temperature working fluids. Gas residual pressure power generation device
[0005] From the above summary: in order to prevent the large-scale turbines used in the same industry in China to prevent high vibration and shutdown when starting up, they all use human intervention to shield the vibration protection signal, and there is no fundamental solution to reduce the vibration when starting up. car, but the high vibration still exists when starting up, and the damage to the equipment is inevitable over time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for reducing vibration during start-up of blast furnace gas residual pressure power generation device
  • A method for reducing vibration during start-up of blast furnace gas residual pressure power generation device
  • A method for reducing vibration during start-up of blast furnace gas residual pressure power generation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, with reference to figure 1 , the blast furnace gas produced by the blast furnace passes through the bag filter 1 and then passes through the TRT inlet electric valve 5, the inlet flapper valve 6, the quick cut valve 7, the steam turbine unit 9, the TRT outlet flapper valve 11, the outlet electric valve 12, and enters the gas main pipe 4. The pressure equalizing valve 8 is connected to the bypass through the quick cut valve 7. When the TRT steam turbine 9 imports high-temperature and high-pressure blast furnace gas to drive the TRT rotor to rotate, realizing the conversion of pressure potential energy and heat energy into mechanical energy, the TRT rotor bearing drives 10 sets of rotors of the generator Turn and cut the magnetic induction line to realize the conversion of mechanical energy into electrical energy. When the TRT is out of service, the blast furnace gas enters the gas main pipe 4 through the bypass pressure reducing valve group 2 and the U-shap...

Embodiment 2

[0051] Embodiment 2: step 1 top pressure is 55KPa; step 2 speed is 13 rpm; step 3 top pressure is 90Kpa, start-up conditions meet lubrication system oil pressure 0.20MPa; power system oil pressure 12MPa; step 4 speed is 28 rpm minutes; step 5 warm-up time is 27-29 minutes; step 6 speed increases from 28 rpm to 980 rpm, and at the same time meets the warm-up time of 25 minutes; step 7 ensures that the automatic valve opening is 20-22% , keep the speed-up rate at 1.2 revolutions per second; step 8, the speed is uniformly increased to 1300 revolutions per minute; step 9, the rotational speed is uniformly raised to 1350 revolutions per minute; step 10, the opening of the stator blade is 27%, and the rotational speed is 45 revolutions per second; Step 11: The rotation speed of the unit reaches 1820 rpm, the opening of the stator blade is 22-23%, and the opening of the manual pressure relief valve group is synchronously controlled to 12-13%; the rotation speed of the unit in step 12 ...

Embodiment 3

[0052] Example 3: step 1 top pressure is 60KPa; step 2 speed is 17 rpm; step 3 top pressure is 100Kpa, start-up conditions meet lubrication system oil pressure 0.26MPa; power system oil pressure 14MPa; step 4 speed is 32 rpm / min; step 5, warm-up time is 25-27 minutes; step 6, the speed is increased from 32 rpm to 990 rpm, and at the same time, the warm-up time is 27 minutes; step 7 ensures that the automatic valve opening is 25-26 %, keep the speed-up rate at 1.5 revolutions per second; Step 8, the speed evenly increases to 1350 revolutions / min; Step 9, the speed uniformly rises to 1370 revolutions / min; Step 10, the opening of the stator blade is 30%, and the speed is 50 revolutions / second The step 11 unit speed reaches 1850 rpm, the opening of the stator blade is 25%, and the synchronous control manual pressure relief valve group opening reaches 14-15%; the step 12 unit speed reaches 2820 rpm; the rest are the same as in embodiment 1 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for reducing vibration in a start-up process of a blast furnace top gas recovery turbine unit. By using an operation method for 'sufficiently warming, infinitely approaching and rapidly jumping', a jumping-off phenomenon caused by excessive vibration of a turbine unit in the start-up process can be effectively prevented; and meanwhile, blast furnace top pressure is stable and is controlled, so that more generated power can be ensured in conditions allowed by a blast furnace, the working efficiency of the unit is improved, and the primary start-up grid connection success rate of the unit is greatly improved.

Description

technical field [0001] The invention relates to blast furnace top gas residual pressure power generation technology, in particular to a method for reducing the vibration during the start-up of a dry-type blast furnace gas residual pressure turbine power generation device, and solves how to reduce blast furnace gas residual pressure while ensuring blast furnace top pressure control In order to solve the problem of start-up vibration of the piezoelectric recovery unit (TRT), this method adopts the operation technology of "full warm-up, infinite approach, and fast jump", which effectively prevents the vibration of the turbine unit from being too large during the start-up process of the TRT unit after the blast furnace is enlarged. The machine phenomenon ensures that more power can be generated under the conditions allowed by the blast furnace, improves the working efficiency of the unit, and greatly improves the success rate of the unit's first start-up and grid connection. Back...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F01D25/04F01D25/36F01D19/00C21B5/06
Inventor 陈小芸张春其邹凯稽金龙
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD